
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>textarea-placeholder换行</title>
    <style>
        body {
            text-align: center;
        }
    </style>
</head>
<body>
    <h1>textarea-placeholder换行</h1>
    <textarea cols="30" rows="10" placeholder="第一行&#10;第二行&#10;第三行&#10;第四行&#10;"></textarea>
</body>
</html>
